1/* Copyright (C) 2002  Free Software Foundation.
2
3   Test strlen with various combinations of pointer alignments and lengths to
4   make sure any optimizations in the library are correct.
5
6   Written by Michael Meissner, March 9, 2002.  */
7
8#include <string.h>
9#include <stddef.h>
10
11#ifndef MAX_OFFSET
12#define MAX_OFFSET (sizeof (long long))
13#endif
14
15#ifndef MAX_TEST
16#define MAX_TEST (8 * sizeof (long long))
17#endif
18
19#ifndef MAX_EXTRA
20#define MAX_EXTRA (sizeof (long long))
21#endif
22
23#define MAX_LENGTH (MAX_OFFSET + MAX_TEST + MAX_EXTRA + 1)
24
25static union {
26  char buf[MAX_LENGTH];
27  long long align_int;
28  long double align_fp;
29} u;
30
31main ()
32{
33  size_t off, len, len2, i;
34  char *p;
35
36  for (off = 0; off < MAX_OFFSET; off++)
37    for (len = 0; len < MAX_TEST; len++)
38      {
39	p = u.buf;
40	for (i = 0; i < off; i++)
41	  *p++ = '\0';
42
43	for (i = 0; i < len; i++)
44	  *p++ = 'a';
45
46	*p++ = '\0';
47	for (i = 0; i < MAX_EXTRA; i++)
48	  *p++ = 'b';
49
50	p = u.buf + off;
51	len2 = strlen (p);
52	if (len != len2)
53	  abort ();
54      }
55
56  exit (0);
57}
58